Problem importing default package classes in JSP

Hi All, I have java source code in default package. This application is written in early 2001. These classes are used by the JSPs in application. Now we are upgrading the application to web sphere 6.0. I think Web sphere container will not recognize the source code in default package since it uses JDK1.4. I can't move these classes in to packages bcz it is using the third party jar files which has files in default package. How can my JSP import java classes from the default package without problem?